When I started my latest Drag Vehicle project I began with a running, driving 1986 Ramcharger with the rear mounted gas tank. I found one of the square Summit aluminum 20 gallon tanks with the built-in sumps for $100.00. That tank fills from the center of the top with a screw-in filler, has no gauge and is filled with foam.

I should have kept the original plastic tank because it fit the truck perfectly, had the original filler tube in the left quarter panel with a cap and I could have adapted larger output fittings to the bottom rear of the tank with epoxy and made the original pickup a vent. I still have to fab proper mounts for the aluminum tank and a fireproof barrier above it that I can use to access the filler.

My 1968 Coronet had the original tank and I swapped that for a VW beetle gas tank and that worked great with the sump in the very bottom center and the filler on top. That made better sense.